Inspired by real events, this film begins on an isolated land plot, 50 miles away from San Francisco, which features the most sophisticated home in the world. Built by Sarah Winchester (Helen Mirren), a wealthy heir to Winchester, this is a house that does not know the rules of normal. Built in continuous construction 24 hours a day during several decades, it has seven floors and hundreds of rooms. For someone who looks from the outside, it looks like a monstrous monument to a mad woman. But Sarah did not build this house for herself, her niece and brilliant doctor Erica Price – she actually made prison and shelter for hundreds of revenge ghosts, and the most frustrating among them decided to pursue her revenge on the Winchester family in the most cruel way possible.